If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

81 x 9 = 801. What must you do to make the this equation true?

Can you Find and name the hidden bird in the picture below ?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

Why are televisions attracted to people?